Tool-holder.



C. W. WATSON.

TOOL HOLDER.

APPLICATION FILED FEB. 7. I916.

1,244,665., Patented 001;. 30, 1917.

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T all whom it may concern:

Be it known that I, CLEMENT W. Arson,

a citizen of the United States of America,

tools. The machine tool residing at Toledo, Lucas county, Ohio,;hav e invented new and useful Tool-Holders,; of which thesfollowingis a specification.

This-inventionrelates to holdersand tools. This invention has utility when incorporated in cutting toolsand holders, especially for rough turning of material. Referring to thedrawings: n A

Figure 1 is a fragmentary side, elevation of an embodiment of the invention as mounted in the turret of a turning, latheaf I Fig. 2 is a side elevation withparts broken away of the holder-and tools therein;

, Fig. 3 is an -lend elaevation with parts a: broken away of the I holder and tools of Fig. 4 is a perspective View of one of the tools; and, c I ,.y;Fig. 5 isaside elevationqofone'ofthe 1. may be provided With a rotary holder 2 for the work-3. Gppos'ing this work may be' theaturret Lmovable to- .Ward and from .the work 3 with the traveling member 5 as actuated by the hand wheel In the turretkis fixedly mounted the stem carrying the: base 8 having rising therefrom the arms or posts'9 extending to thezopposing holding member .10 parallel andlopposing the base holding member 8. Thebase member 8 may be anchored to the stem '7 by theset' screw 11. Theends of the posts i 9 remote from the base. member 8 have the reduced: ends .12, riveted into snug I fitting engagement with the openings 18 of the outer stiffening or holding ring memb r-l J1. 1 f M {The arms or posts ,9 have the shoulder 14 engaging the base. member 8 for determining, positivelythe axial position .of the :posts 7 9qinopposing the ,work 3in normal operationi rfr he. reduced diameter portion 15 of each ,arm19 extending in the base member/8 forming a shoulder ;l 4c h as the chord slot vl6 with which apair 1: ofi set; screws; ;17 4 i-coact. ach a fihcar isz sca e;; .8c,i.the graduations of which are disposed adjacent the .g aiduaticns; 1.9 of the base memben8- Ac- .ciordingly, ,bysetting backlonegset Screw .17

. iandirunni g up the other, eaehaarmor post 7 Specification of Letters ratnt.

. n iilr t n ed M430. 7 i ApplicationfiledFebruaiyZ1916.; Seria1No.76,-556 I 1 not ;only against lfurther 'orqany; rocking movement-but against axial movement. 11:,

Each post --9 may 5 carry such "number? 1 of.

tools as may be desired. As hereinshown each post 9,. is carryingone, icuttingvtool: 20

disposedinan-opening-21 directly through ,1

the axisofth'e arm :9 but inclined to; axially ceXtendas) tothe working: directionof'th skeleton head. Thetool. -20 has the fiat side- 22 determining at all times.-the cuttingvedges 28,24. The 1 face -25 deterlnineszthe cylindrical cut on thestook by theqedge: 23, and "the face 26 determines: the'progress out radially of the stock by; the edge 524.5, A templeticr. .scale inay be-usedto determine the angleQfhloe.-

tween the faces 25 and? 26 in "grinding ,lof

these faces, the line of which edge :27 may recede; from y the intersection of the edges 23,,24. g By confining the. grinding to; the

effectively eliminates any errorsior troubles in tool upkeep. Further, these ,gcutting edges;23; 24, may be positively; fixed'a's to faces 7 25, 26,,the fiat face 22 determines the a;

outting edges 23, 24 as always constant and .the;.arin-9 byset screw -27. 1 The. fitting of thetooliQOinto the ,work. aswell as withdrawal therefrom:isrpositively controlledby the (screw--28 having the oollari29- engaging in; the recess 30 of the. tool 20.- vAccordingly, wthe screw 28. is a positive" longitudinal feedsdetermining device for: the tool 20, While theset screw 27 isan additionalpositive a lock holding the tool againstxrocking. It is to. be not'edcthe face 22- of the tool 20,

as held by the set screw. 27, is IlOtilll a plane parallel to the axis of the j arm 9; but is. inclinedlgto suchjaxis,1thereby insuring the rake or advantageous angleof cut for the jedges23, 24, in working-operations,

'Adjustment of thetools20 axially of the arms 9' permits considerable range-in. the

diameter of cu'tstobe madeiin thestock.

Further, this longitudinal adj ustmentof the tool permits of the use ;of .a minimum. of expensive-- high speed steel stock-in atool,w hich\ stock,v may. beaused, throughout a cOIlSidefabletportio'n of its lineal ;extent.-. r v

In the l1a11dlin2yof various. stocks speeds of? :operation, the-tur1i1ng and I the proper enteIingactionuand z-clearin'gi'ofsthe For instance, in the tougher materials as. hard steel it is desirable to have the cutting edges 28, M, in advance of the radius 1n the relative rotation of the stock as to the tool.

The adjustment to care for this condition-is readily accomplished by manipulation of the set screw 1'7. For softer stock, these adjust ments may be readily varied in this same skeleton cutter vhead. In the instance of brass, the rocking of the arms 9 should be such as to bring the cutting edge, as-23, 24, back of the radiusof relative rotation of the Work extending through the axis of the arm 9. I I

In the operationswith this cutter head, the skeleton or open structureprecludes any clogging, even of heavy cuts of stock, for these turnings readily pass between the posts or arms 9. a ---The opposing plurality of tools 20 take up the transverse pushing action of the tools relatively to each other for effectively hold- I ing the tools in the WOl'k for balanced and uniform cutting action. looding of the cut material eiiectively'is easily possible, to dissipatethe heat from the rapidoperation, while the distribution of the cutting to the plurality of tools permits of rapid Work Without objectionable heating of the cut ters. In progressive cutting of stock of considerable length, the proportions may be such that the opening 31 in the stem 7 can care for the cut material to be guided there through. Y

For the setting of the tools 20 an article of the desired finished diameter may be centered in the member 10 even at the bench and the tools 20 fed up to have the cutting edges 23 in prbper position. \Vith the head in the machine tool all but one of the out ters 20 ma be run back into inoperative position by-the screw 28, and the one left in positionadjusted to effect cutting until the desired diameter of cut is attained upon 1 the stock, then the remaining cutters may cutting the stock.

be; run up'into position as to this diameter of cut and so lockedby the set 'screws'27 This cutter head is of simple rigidconstruction o-f'a type tohandle'a great range in variety and sizes of stock in most rapid and economical manner embodying features of simplicity inadjustmentf and upkeep'to readilycare for the Wide range of operative conditions. Y i

In the device as herein disclosed all the progressive cutting power is effective for The Work during the process is visible at all: times so the operator may. see the character of cut .made. The rigidtype of construction and balanced action oft-he cuts reduce vibrations to a minimum and thus eliminate chatter. The tools 20 are interchangeable and are the only Wearing part-sin this device. 1

What is claimed and it is desired to secure by Letters Patent is:

1; A'holder embodying a base, an annular series of parallel arms extending from the base, tools carried by the arms, an arm holding ring parallel to the base for-.stiiiening the arms, and means for independently rockingthe arms to vary the tool adjustment.

A plurality of cutting tools for work, a skeleton head supporting said tools ,in opposing relation, and meansfor independentlyangularly adjusting the tools as to the Work.

3. A plurality of cutting tools, independently rockable adjustable carrying arms for the tools, and supportingm'eans for the arms. j 1

l. Aplurality'of cutting tools, adjustable carrying arms forthe tools, and a base for I the arms, said arms tosaid base. r A' plurality ofcutting tools, arms for the tools, anda pair of opposing holding rock-ably adjustable as members forthe arms as tooneoit which the arms are independently adjustable. 4

6. A plurality of cutting tools, arms for the tools, a holding member for'thearms, and means for adjusting the arms relatively to the member. I I j 7. A plurality of tools, arms for the tools, a holding member for the arms, and adjustable locking means carried bythe member for the arms 'whereby the arms may be locked in adjusted position as to the member to maintain the position of the tools. 8, A turning tool, a holder inclining the tool along the axis of the Work, and a skeleton support axially of the Work for the holder, said support embodying :a member fd itional'ly rocking the tool. r 1 10. A turning tool, a holder incliningthe 'toolaalong the axis of the work, a skeleton support axially of the work for the holder,

and means for adjusting the tool in the holder, said support embodying a member rockabl e for additionallyrocking the tool.

'11. A'turning e001,; ahold er inclining the tool al ong'the axis otth'e 'WOIk, a skeleton su pport axially of the: Work for the holder,

and means 5 for longitudinally adj usti'ngft'he tool inthe'hol der, said support embodying a member rockabl'e for additionally rocking the tool.

12. work holder, aturning tool, a holder inclining the toolalong the axis of the ork, a sup-port axially of the Work for the-holder,

and means for laterally adjusting the tool With the holder as to the support.

v ing the flat side to permit the fiat side to 13. A Work holder, a turning tool, a holder inclining the tool along the axis of the Work,

a support axially of the Work for the holder,

and means for rocking the holder as to the support.

14. A Work holder, a cutting tool having a fiat side, a holder inclining the tool along the axis of the Work, said holder extending longitudinally of the axis of the Work, and

said tool having agrinding face intercept- 16. A work holder, a cutting tool, a holder for axially inclining the tool, there being a mounting for said holder axially of its Work, and means for moving the holder as to the mounting in adjusting the direction of the cutting edge of the tool as to the relative axis of the Work.

17 A Work holder, a tool, a holder for the tool, there being a mounting for the tool axially of the Work, and means including a support for rocking the holder and tool as to the support to adjust the cutting edge of the tool as to the relative radius of the WOI'k.

18. The combination With a support, parallel arms extending from said support, and an annular series of tools carried by the arms to bring advance operating edges of said tools respectively ing position as to the Work.

In Witness whereof I afiix my signature.

CLEMENT W. WATSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

into material remov- It is hereby certified that in Letters Patent No. 1,244,665, granted October 30, 1917, upon the application of Clement W. Watson, of Toledo, Ohio, for an improvement in Tool-Holders, an error appears in the printed specification requiring c0rrection as follows: Page 2, lines 116 and 122, claims 10 and 11, for the words a skeleton read an openfmme; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofice.

Signed and sealed this 20th day of November, A. D. 1917.

[SEAL] R. F. WHITEHEAD,

Acting Commissioner of Patents. Cl. 29105. 

